diff --git a/README.md b/README.md
index c82d98a..1a4bae1 100644
--- a/README.md
+++ b/README.md
@@ -303,7 +303,10 @@ governor = performance
 # EPP: see available preferences by running: cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences
 energy_performance_preference = performance
 
-# PP: see available preferences by running: cat /sys/firmware/acpi/platform_profile_choices
+# Platform Profiles
+# https://www.kernel.org/doc/html/latest/userspace-api/sysfs-platform_profile.html
+# See available options by running:
+# cat /sys/firmware/acpi/platform_profile_choices
 # platform_profile = performance
 
 # minimum cpu frequency (in kHz)
@@ -330,7 +333,10 @@ governor = powersave
 # EPP: see available preferences by running: cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences
 energy_performance_preference = power
 
-# PP: see available preferences by running: cat /sys/firmware/acpi/platform_profile_choices
+# Platform Profiles
+# https://www.kernel.org/doc/html/latest/userspace-api/sysfs-platform_profile.html
+# See available options by running:
+# cat /sys/firmware/acpi/platform_profile_choices
 # platform_profile = low-power
 
 # minimum cpu frequency (in kHz)
diff --git a/auto-cpufreq.conf-example b/auto-cpufreq.conf-example
index 18402cb..a6a5924 100644
--- a/auto-cpufreq.conf-example
+++ b/auto-cpufreq.conf-example
@@ -7,7 +7,10 @@ governor = performance
 # EPP: see available preferences by running: cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences
 energy_performance_preference = performance
 
-# PP: see available preferences by running: cat /sys/firmware/acpi/platform_profile_choices
+# Platform Profiles
+# https://www.kernel.org/doc/html/latest/userspace-api/sysfs-platform_profile.html
+# See available options by running:
+# cat /sys/firmware/acpi/platform_profile_choices
 # platform_profile = performance
 
 # minimum cpu frequency (in kHz)
@@ -34,7 +37,10 @@ governor = powersave
 # EPP: see available preferences by running: cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences
 energy_performance_preference = power
 
-# PP: see available preferences by running: cat /sys/firmware/acpi/platform_profile_choices
+# Platform Profiles
+# https://www.kernel.org/doc/html/latest/userspace-api/sysfs-platform_profile.html
+# See available options by running:
+# cat /sys/firmware/acpi/platform_profile_choices
 # platform_profile = low-power
 
 # minimum cpu frequency (in kHz)